# chemistry

posted by .

Calculate the density of atoms in (001) in lithium. Express answer in atoms/cm.

• chemistry -

Lithium is a BCC Crystal
a = 3.5092 * 10^-8

Planar Density (001) (top plane) = 1/a^2

= 8.12 * 10^14

• chemistry -

wrong

• chemistry -

What is the correct answer flou??

• chemistry -

I try again

• chemistry -

If lithium is a BCC crystal.

planar density is atoms per area
the 001 plane look like this
o--o
| |
o--o

the sides are equal to lattice constant a
and the atoms in this area = 4(1/4) = 1

• chemistry -

I tried but its graded wrong 4 times. that's correct it is BCC. atom of this area is ! only but still tere is a mistake

• chemistry -

Am i the only one to make the obvious question here? If we knew how we got the answer, we could spot a mistake that might have been overlooked this entire time. How did we get the answer?

• chemistry -

The question has a mistake in it, look at the forum...

• chemistry -

1.218*10^15

(001) its "Body" plane !!!!
0---0
|.0.|
0---0

4*(1/4)+ 1(1/2)= 1.5
1.5/a^2= 1.218*10^15

• chemistry -

1.16e15

## Similar Questions

1. ### chemistry

Calculate the mass, in kg, of each sample.9.62×1026 cadmium atoms. -5.72×1027 nickel atoms. -9.14×1027 manganese atoms. -9.02×1029 lithium atoms.
2. ### Science

Lithium atoms, like hydrogen atoms, have only a single electron in their outer shells, yet lithium atoms do not join together to form Li2 molecules the way hydrogen atoms form H2 molecules. Instead, lithium is a metal with each atom …
3. ### Chemistry

Calculate the density of atoms along [011] in molybdenum (Mo). Use only the information provided in your class Periodic Table, and express your answer in units of atoms/cm.
4. ### chemistry

Calculate the density of atoms along [011] in molybdenum (Mo). Use only the information provided in your class Periodic Table, and express your answer in units of atoms/cm.
5. ### chemistry

Calculate the density of atoms along [011] in molybdenum (Mo) . Use only the information provided in your class Periodic Table, and express your answer in units of atoms/cm
6. ### Chemistry

Calculate the density of atoms in (001) in lithium (Li)(units of atoms/cm2)
7. ### Chemistry

Calculate the density of atoms on plane (001) in Lithium
8. ### chemistry

Calculate the density of atoms in (001) in lithium (Li). Express your answer in units of atoms/cm2. incorrect
9. ### chemistry

calculate density of atoms in(001) in Lithium answer in units of atoms/cm2
10. ### chemistry

Calculate the density of atoms in (011) in lithium (Li). Express your answer in units of atoms/cm2.

More Similar Questions